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    <meta charset="UTF-8">
    <title>完整表格</title>
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<table border="1" width="600px" height="300px">
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        <tr>
            <td colspan="2">评价</td>
            <td colspan="5">本次考试及格人数3人,不及格人数1人。及格率:75%</td>
        </tr>
    </tfoot>
    <caption>
        <marquee><font color="red">欢迎使用学生成绩管理系统</font></marquee>
    </caption>

    <tbody>
        <tr>
            <td>1</td>
            <td>admin</td>
            <td>20</td>
            <td>100</td>
            <td>90</td>
            <td>80</td>
            <td>
                <a href="">修改</a>
                <a href="">删除</a>
            </td>
        </tr>
        <tr>
            <td>2</td>
            <td>alice</td>
            <td>18</td>
            <td>80</td>
            <td>80</td>
            <td>80</td>
            <td>
                <a href="">修改</a>
                <a href="">删除</a>
            </td>
        </tr>
        <tr>
            <td>3</td>
            <td>jack</td>
            <td>21</td>
            <td>90</td>
            <td>90</td>
            <td>60</td>
            <td>
                <a href="">修改</a>
                <a href="">删除</a>
            </td>
        </tr>
        <tr>
            <td>4</td>
            <td>lucy</td>
            <td>19</td>
            <td>70</td>
            <td>100</td>
            <td>50</td>
            <td>
                <a href="">修改</a>
                <a href="">删除</a>
            </td>
        </tr>
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    <thead>
        <tr>
            <th rowspan="2">学号</th>
            <th rowspan="2">姓名</th>
            <th rowspan="2">年龄</th>
            <th colspan="3">成绩</th>
            <th rowspan="2">操作</th>
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        <tr>
            <th>Java</th>
            <th>Web</th>
            <th>MySQL</th>
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